diff --git a/wp-includes/nav-menu-template.php b/wp-includes/nav-menu-template.php
index bd0454252d..be54bbe5e0 100644
--- a/wp-includes/nav-menu-template.php
+++ b/wp-includes/nav-menu-template.php
@@ -80,10 +80,21 @@ class Walker_Nav_Menu extends Walker {
 
 		$output .= $indent . '<li' . $id . $value . $class_names .'>';
 
-		$attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';
-		$attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';
-		$attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';
-		$attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';
+		$atts = array();
+		$atts['title']  = ! empty( $item->attr_title ) ? $item->attr_title : '';
+		$atts['target'] = ! empty( $item->target )     ? $item->target     : '';
+		$atts['rel']    = ! empty( $item->xfn )        ? $item->xfn        : '';
+		$atts['href']   = ! empty( $item->url )        ? $item->url        : '';
+
+		$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );
+
+		$attributes = '';
+		foreach ( $atts as $attr => $value ) {
+			if ( ! empty( $value ) ) {
+				$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
+				$attributes .= ' ' . $attr . '="' . $value . '"';
+			}
+		}
 
 		$item_output = $args->before;
 		$item_output .= '<a'. $attributes .'>';